Allow system server to getattr profile_data_files

This is needed in order to get the stat-size of the files.

Bug: 30934496
Test: gts-tradefed -m GtsAndroidRuntimeManagerHostTestCases
Change-Id: I1df0ba941e8f9ff13a23df4063acc3c4f1555c1b

private/system_server.te

@@ -727,7 +727,7 @@ with_asan(`
 # System server never reads the actual content. It passes the descriptor to
 # to privileged apps which acquire the permissions to inspect the profiles.
 allow system_server user_profile_data_file:dir { search };
-allow system_server user_profile_data_file:file { open read };
+allow system_server user_profile_data_file:file { getattr open read };
 
 ###
 ### Neverallow rules